12765025138 has 8 divisors (see below), whose sum is σ = 19173877632. Its totient is φ = 6373732596.

The previous prime is 12765025081. The next prime is 12765025159. The reversal of 12765025138 is 83152056721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12765025138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4388170 + ... + 4391077.

It is an arithmetic number, because the mean of its divisors is an integer number (2396734704).

Almost surely, 2^12765025138 is an apocalyptic number.

12765025138 is a deficient number, since it is larger than the sum of its proper divisors (6408852494).

12765025138 is an equidigital number, since it uses as much as digits as its factorization.

12765025138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8779976.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 12765025138 in words is "twelve billion, seven hundred sixty-five million, twenty-five thousand, one hundred thirty-eight".